1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 636 · 40 questions

The trick (Reverse and subtract): Reverse the number and take the smaller number away from the bigger one. The answer is always one of 198, 297, 396, 495, 594, 693, 792, 891: middle digit 9, first and last digits adding to 9. Reverse that answer and add: you always get 1089.

1. 1.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
2. 2.Do the 1089 trick with 115: reverse and subtract, then reverse that answer and add. What do you get?
3. 3.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
4. 4.Take 600. Reverse its digits and take the smaller number away from the bigger one. What do you get?
5. 5.Do the 1089 trick with 274: reverse and subtract, then reverse that answer and add. What do you get?
6. 6.198 + 891 =
7. 7.Do the 1089 trick with 720: reverse and subtract, then reverse that answer and add. What do you get?
8. 8.Take 913. Reverse its digits and take the smaller number away from the bigger one. What do you get?
9. 9.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
10. 10.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
11. 11.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
12. 12.Do the 1089 trick with 177: reverse and subtract, then reverse that answer and add. What do you get?
13. 13.297 + 792 =
14. 14.Take 701. Reverse its digits and take the smaller number away from the bigger one. What do you get?
15. 15.495 + 594 =
16. 16.Do the 1089 trick with 741: reverse and subtract, then reverse that answer and add. What do you get?
17. 17.Take 496. Reverse its digits and take the smaller number away from the bigger one. What do you get?
18. 18.Do the 1089 trick with 950: reverse and subtract, then reverse that answer and add. What do you get?
19. 19.Take 990. Reverse its digits and take the smaller number away from the bigger one. What do you get?
20. 20.Do the 1089 trick with 940: reverse and subtract, then reverse that answer and add. What do you get?
21. 21.Take 876. Reverse its digits and take the smaller number away from the bigger one. What do you get?
22. 22.Do the 1089 trick with 105: reverse and subtract, then reverse that answer and add. What do you get?
23. 23.Do the 1089 trick with 981: reverse and subtract, then reverse that answer and add. What do you get?
24. 24.Take 914. Reverse its digits and take the smaller number away from the bigger one. What do you get?
25. 25.Take 680. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.Take 114. Reverse its digits and take the smaller number away from the bigger one. What do you get?
27. 27.Take 721. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
29. 29.Take 286. Reverse its digits and take the smaller number away from the bigger one. What do you get?
30. 30.396 + 693 =
31. 31.Take 601. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.Take 761. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.Take 406. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
35. 35.Take 980. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.Take 227. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.594 + 495 =
38. 38.Take 911. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.Take 940. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.Do the 1089 trick with 962: reverse and subtract, then reverse that answer and add. What do you get?

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